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A voltage source V=V(0) sin (100 t) is c...

A voltage source `V=V_(0) sin (100 t)` is connected to a black box in which there can be either one element out of `L,C,R` or any two of them connected in series.
At steady state, the variation of current in the circuit and the source voltage are plotted together with time.using an oscilloscope, as shown
The element (s) present in black box is/are:

A

only C

B

L and C

C

L and R

D

R and C

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • A voltage source V=V_(0) sin (100 t) is connected to a black box in which there can be either one element out of L,C,R or any two of them connected in series. At steady state, the variation of current in the circuit and the source voltage are plotted together with time.using an oscilloscope, as shown Values of the parameters of the elements present in the black box are-

    A
    `R=50Omega , C=200 muf`
    B
    `R=50Omega , L=2mmu`
    C
    `R=400 Omega, C=50 muf`
    D
    None of these

  • A voltage source V=V_(0) sin (100 t) is connected to a black box in which there can be either one element out of L,C,R or any two of them connected in series. At steady state, the variation of current in the circuit and the source voltage are plotted together with time.using an oscilloscope, as shown If AC source is removed, the circuit is shorted for some time so that capacitor is fully discharge and then a battery of constant EMF is connected across the black box, at t=0 .The current in the circuit will-

    A
    increase exponentially with time constant =`0.02 sec`.
    B
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    C
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    D
    first increase and then decrease

  • AC source of voltage of V=V_(0)sin (100t) is connected with box which contain ether RL of RC circuit. If voltage leads the current by phase pi//4 then :

    A
    `R=1 Komega L=10 H`
    B
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    C
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    D
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